Hello Terry,I have a problem with my amtroil hot water maker that I think is related to my aquastat. When the hot water maker calls for heat, the furnace does not kick on. I can hear the zone valve opening, and sometimes the burner clicks on for a second, then pops off. The house has 3-zone heating and all other systems turn the burner on when they call for heat. The circulator pump for the hot water maker is shared by one of the other heating zones and it works fine. Any advise???Thanks.